Yellowfin tuna lot of 2 from Eckmühl Lighthouse, lightly pink, sliced, is the essential ingredient for many preparations. Yellowfin tuna, with its dense, chewy flesh, is known to be an excellent alternative to eating meat. Sometimes called "sea steak", this "protein bomb" is a simple food, appreciated by children, and which lends itself to a thousand and one daily recipes as well as the most sophisticated preparations.